... , Coin Operated Vending Breathlyzer police alcohol tester, Breath Alcohol Tester, Alcohol breath tester, Alcohol Breathalyzer Tester, Alcohol Breathalyzer, Alcohol Tester, Alcohol Breath meter, Breathalyzer, Alcometer ... difference between HSAT309 and HSAT319 is:1, The HSAT309 power supply is power cord and switch, the HSAT319 is power adapter ...